AI Article Synopsis
- - This study explores the creation of biosorbents from biowaste, specifically using Albizia Lebbeck pods to produce biowaste activated carbon (BAC) for efficiently extracting uranium U(VI) from water, addressing environmental challenges.
- - Various analytical methods, including TGA, FTIR, and BET, were utilized to assess the thermal properties, chemical structure, and porosity of the produced BAC, as well as its surface acidity and morphology.
- - The best conditions for uranium adsorption were found to be a 0.5 g BAC dose, a 2-hour contact time, a pH of 6, and an initial U(VI) concentration of 10 ppm, achieving a remarkable 90.60
Article Abstract
Efficient and cost-effective biosorbents derived from biowaste are highly demanding to handle various environmental challenges, and demonstrate the remarkable synergy between sustainability and innovation. In this study, the extraction of uranium U(VI) was investigated on biowaste activated carbon (BAC) obtained by chemical activation (phosphoric acid) using Albizia Lebbeck pods as biowaste. The biowaste powder (BP), biowaste charcoal (BC) and BAC were evaluated by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR) and Brunauer-Emmett-Teller (BET) with nitrogen adsorption for thermal properties, chemical structures, porosity and surface area, respectively. The pH for acidic or basic nature of the surface and X-ray diffraction (XRD) analysis were performed for BAC. The morphological and elemental analysis were performed by scanning electron microscopy (SEM) and energy dispersive X-ray (EDX). The extraction of uranium U(VI) ions from aqueous solutions using BAC as sorbent was investigated by using different variables such as pH, contact time, initial uranium U(VI) concentration and BAC dose. The highest adsorption (90.60% was achieved at 0.5 g BAC dose, 2 h contact time, pH 6, 10 ppm initial U(VI) concentration and with 200 rpm shaking speeds. The production of this efficient adsorbent from biowaste could be a potential step forward in adsorption of uranium to meet the high demand of uranium for nuclear energy applications.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10765602 | PMC |
| http://dx.doi.org/10.3389/fchem.2023.1327212 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Photoisomerization-mediated tunable pore size in metal organic frameworks for U(VI)/V(V) selective separation.
Nat Commun
March 2025
Frontiers Science Center for Rare Isotopes, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, China.
Selective extracting uranium from seawater is quite challenging, particularly the presence of vanadium, which poses a significant obstacle for most amidoxime absorbents. Adsorbents with size-matched pores and coordination environment can improve the uranium selectivity but usually deteriorate the adsorption capacity. Herein, a dynamically matched spatial coordination strategy is proposed to improve the performance of uranium extraction.
View Article and Find Full Text PDFInfluence of Metal Ion Complexation on the Radiolytic Longevity of Butyramide Extractants under Direct Dissolution Process Conditions.
ACS Omega
March 2025
Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Fremont Avenue, Idaho Falls, Idaho 83415, United States.
The direct dissolution of voloxidized used nuclear fuel (UNF) into an organic solution-comprised of diluent and specialized extractants-poses a promising alternative to the traditional liquid-liquid solvent extraction approach to reprocessing UNF. However, moving to direct dissolution removes the presence of a concentrated nitric acid aqueous phase, which has been shown to significantly influence the radiolytic longevity of extractants in conventional extraction flowsheets. Given the limited knowledge of radiation effects under direct dissolution conditions, here we present a time-resolved and dose-accumulation study on the impact of direct dissolution conditions on the radiolytic longevity of two candidate butyramide extractants, -di(2-ethylhexyl) butyramide (DEHBA) and -di(2-ethylhexyl)isobutyramide (DEHBA), in pre-equilibrated -dodecane solvent in the presence and absence of process-relevant metal ions, specifically, uranium and rhenium.
View Article and Find Full Text PDFUranium dynamics at an iron ore mine site in Northern Sweden: Sources and mobility along the mine value chain.
J Contam Hydrol
February 2025
Division of Geosciences and Environmental Engineering, Luleå University of Technology, S-97 187 Luleå, Sweden.
Uranium (U) release from mining has been typically associated with former U mine sites, but trace U levels in iron or base metal ores can also lead to U mobilization into ground and surface water posing potential risks due to U's chemical toxicity and radioactivity. This study investigates U sources and mobility at an iron ore mine site in Northern Sweden, where U concentrations (median 1.8 μg/l) exceeding the Swedish annual guideline value of 0.
View Article and Find Full Text PDFTheoretical study on the kinetic behavior of Np(VI) reduction by hydroxylamine and its derivatives: substituent effect.
Phys Chem Chem Phys
March 2025
Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
Spent fuel reprocessing entails controlling the valence state of Np and its routing in the plutonium-uranium reduction extraction (PUREX) process. Hydroxylamine (HA) and its derivatives are effective salt-free reductants that can reduce Np(VI) to Np(V) without its further reduction. Experimentally, hydroxylamine, -methylhydroxylamine (MHA) and ,-dimethylhydroxylamine (DMHA) reduce Np(VI) at different reaction rates.
View Article and Find Full Text PDFA synergistic coordination-reduction interface for electrochemical reductive extraction of uranium with low impurities from seawater.
Nat Commun
February 2025
State Key Laboratory of Environment-friendly Energy Materials, School of National Defense & Nuclear Science and Technology, School of Materials & Chemistry, CAEA Innovation Center of Nuclear Environmental Safety Technology, Southwest University of Science & Technology, Mianyang, PR China.
Electrochemical extraction of uranium from seawater is a promising strategy for the sustainable supply of nuclear fuel, whereas the current progress suffers from the co-deposition of impurities. Herein, we construct a synergistic coordination-reduction interface in CMOS@NSF, achieving electrochemical extraction of black UO product from seawater. The internal sulfur of CoMoOS tailors the electron distribution, resulting in the electron accumulation of terminal O sites for strong uranyl binding.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!